Open it and start billing. Works on any computer — Windows, Mac, or a shop laptop somebody else set up.

Your bills are kept on the machine as you work, so a weak connection does not stop the counter. Sign in with your email or with Google.

The full counter app, installed. Best if the shop computer is the till and it stays open all day.

Everything works with the internet unplugged — billing, stock, customers. It syncs the moment a connection comes back.

Bill from the counter on your phone. Built for the everyday Android phone, not only the expensive one.

Open this page on the phone itself and tap the button — it downloads the app file. Android will ask whether to allow an install from your browser; say yes, that is normal for an app that is not on the Play Store yet.